OK, I've read the ZClasses tutorial, and done some playing around. I have a test class i'm trying to create, but I'm not sure if what I'm trying to do is possible. The idea is to have a "Random Image" object. It acts like a Folder in that you can drop images into it, but when rendered it picks a random object from its contents and returns the HTML for it. So if I have an RI called "foo", I can put images into it via cut/paste, upload, etc (just like a folder) but if I refer to <dtml-var foo> in a document or method, I get the HREF for a random image in the RI. I can do this with a regular folder by creating an index_html (which could just as well be called 'pluck_random_item') in the image folder containing <dtml-var expr="_.whrandom.choice(objectValues())"> and then using the following in my documents: <dtml-with imagefolder> <dtml-var index_html> </dtml-with> but I would really like to have the cool object behavior described above. I've been thrashing about trying different base classes and suchlike but haven't found anything that works. I though that creating an 'index_html' (which is basically a 'render' method) in a folder would have that method called automatically upon <dtml-var foldername> but it looks like that's not the case. Is what I want possible? If so, what kind of ZClass do I need to make? -Doug -- Doug McNaught doug@mcnaught.org http://www.mcnaught.org/~doug